Tool for setting teeth of crosscut-saws.



A. H. BASTIAN.

TOOL FOR SETTING TEETH 0F CROSSCUT sAws.

APPUCATION FILED JULY I7, I91].

MM NW. 26, 1919.

fizvenf 02 W 3mm r s'rns TOOL FOR SETTING TEETH. F CROSSCUT-SAWS.

To all whom it may concern Be it known that 1, AUGUST H. BASTIAN,

a citizen of the United States, and a resident of I-Iillsdale, county ofMultnomah, State of Oregon, have invented a certain new and usefulImprovement in Tools for Setting Teeth of Crosscut-Saws, lowing is aspecification.

The object of my invention is to provide a tool for setting the teeth ofa saw, especially a cross-cut saw, and to provide means in the tool forfirmly clamping the same on the saw tooth to be set while holding thetool in place, so that during the operation of hammering the saw-pointto its proper set the tool will not slip or shift; and in this wayinsuring that better work may be done, and all teeth of the saw be givena uniform set. My invention further has for its object the providing ofan adjustable gage in thetool by which the proper location of the tip ofthe saw tooth may be determined relatively to the length of set to begiven the point of the tooth. My invention further has for its objectthe providing of a compact, simple, durable, handy and effective toolfor the purpose mentioned.

I attain my objects by the tool illustrated in the accompanyingdrawings, in which:

Figure 1 is a side elevation of my tool; 7

Fig. 2 is a partial, longitudinal section of same; I

Fig. 3 is a top-end view of my tool; and

Fig. 4 is a top edge view of my tool, having reference to the positionin which the same is shown in Fig. 1.

My tool comprises a shank, a, made with a head I) having opposed jaws 0,cl, leaving an intermediate space 6 for inserting the tip of the sawtooth, as illustrated in Fig. 1. The face of the lower jaw is shaped tothe form of the set to be given the saw-tooth, and constitutes the anvilof my tool. In the upper jaw is reciprocably supported a striker f, heldnormally projected by a coilspring 9. The extremity of the striker isbeveled, as shown at f, so as to conform with the opposed face d of thelower jaw which serves as the anvil.

In order to clamp my tool firmly in place on the saw tooth, whilesetting the latter, the upper jaw is provided with a set-screw orgripping pin it, which may be adjusted so as to leave sufiicient spaceto insert the saw tooth, as indicated by the dotted lines 2',

Specification of Letters Patent.

of which the fol-' Patented Nov. 26, 1918.

Application filed July 17, 1917.. Serial No; 181,156.

under it, and the set-screw it serves to secure the set-screw h in placeas adjusted.

The lower jaw (Z is provided with a projectable gripping pin j, normallyheld retracted by a coil spring la. To forcibly project thegrippingpinj, I provide a lever Z,

fulcrumed on a pm 112, and provided with a cross-pin a bearing againstthe head of the projectable gripping pin 7'. Thus when the lever j ismoved toward the shank a, as illustrated in dotted outlines in Fig. 2,the pin 9' is projected. The stop 9 limits the movement of the lever dueto the action of the spring is. The extremity of the pin j is beveled,as shown at j, and the adjustable gripping pin 72, is located inward ofthe gripping pin j, in order that the saw tooth will be held in inclinedposition between the pins 72,, j, as shown in Fig. 2, and being thus inproper relation with respect to the anvil surface 03.

In order to determine the proper location of the tip of the saw toothrelatively to; the

length of the set to be given the point of the saw tooth, the head I)is. provided with an adjustable gage plate'o, fixed in place as ad'-justed by a set-screw p, threaded into the head 6 through a slot 10 ofthe gate-plate 0.

I claim:

1. In an instrument of the character described comprising a shank and ahead made with two opposed jaws spaced apart, a projectable gripping pinin the lower jaw, a lever pivoted on the handle for projecting saidgripping pin, a gripping pin in the upper jaw, the face of the lower jawconstituting an anvil and being shaped to the set to be given the pointof the saw tooth. and a spring-controlled striker re'ciprocable in thehead.

2. In an instrument of the character de scribed comprising a shank and ahead made jectable gripping pin in the lower jaw, a lever pivoted on thehandle for projecting said gripping pin, a gripping pin in the upperjaw, and the projectable gripping pin being located outward of thecompanion gripping pin.

4:.In an instrument of the character de-I cribed comprising a shank anda head made jectable gripping pin in the lower jaw, the

extremity of such gripping pinbeingL- beveled, a lever pivoted on thehandlelfor' ro ecting said gripping p1n', a gripp ng pinfm the upperjaw, and the pro eetable grippingnpin being loeated.:-.outward Iof thecompanion grippingv pm.

5. In an instrument of the cha'racter r'idescribed comprising ashank-andia' head niade' i with two opposed aws spaced apart,- a projectable gripping pin in the blower jaw, =a'

spring normally holding such j aw-. retraoted,"1

a lever pivotedv 0n the handle'for; projecting sald grippingpin, agrippingpin in the mg located outward of the-= companion gripping pin,the vface of the lowerjaw con stituting an anvil and being shaped tothe" set to be given the point of the saw tooth, a spring-controlledstriker reciprocable in the head, and an adjustable gagemin the spacebetween adapted for positioning-the sawtooth on the anvil relatively tothe length of theset to be giventherpoint-of the sawtooth.

6. In an instrument of the'icharacter de-ma scribed comprlslnga :shankand ahead: made i I.

I with two. 'opp'osedj-aws spaced apart, a pro-" -jectablet gripping pinin :the lower j aw, a

lever pivoted on the handle for projecting sald gripping pin, and anadjustable grip ping pin in the upper'jaw In an instrument-of theicharacter 'de scribed 'comprisingia shank and azheadimadew I with twoopposed jaws spacedapa-rtya pro 1 jectable' gripping-pin in thelower'j'aw, 'a leverpivoted on the handle for projecting: said gr1ppingpin,

such pin in place. 8. In an instrument. of thecharacterxdescrlbedcomprising a shank nd h d m d gripping: pin; beingbeveled, a lever pivoted on the h-andle-for projecting said grippingpinyan adjustable gripping pininv the upper =j aw, 'randethetpro- 1Copies of this patentrmay he obtained dor an adjustable gripping pin 1nthe upper jaw, andmeansfor locking-1 fiveicentsreach, by addressin theeuc Wash1nzton,.-D..G,"

jectable" gripping pin being located outward of the companion grippingpin.

9. In an instrument of the character dewith two opposed j aws spacedapart, a projectable'gripping pin in the lower jaw, a

lever pivoted on the handle for projecting said gripping pin, a grippingpin"in' the with two opposed jaws spaced apart," a .pro'i' a springcontroll'ed striker recipro'cahle in the'thead, andvanndjustable gage inthe lengtlre'iof the set to be given the; point of the saw-, t'ooth'; 1/21 10. In an instrument-"of the character describedcomprising: a shankand a head made with-two; opposed: jaws spaced apart, a pro ject'ablegrippin'g ping in the lower jaw," a

'scribedcomprising ashank and a head made i p '70 1 space :betwe'enadapted; for; positioning the sawr s -tooth onr l-the anvil relativelyto the spring-normallyholdingsuch a'wl retracted, i a lever pivotediorithehandle tor projecting; ,upper aw, the pro ectable.gripping.pinhe-2said v igrip.ping ;pin, a gripping :pin in the upper 'ij aw., the-:projee'table igripping pin 'be-J ing -located outward of the" companiongrip lengthfof the isetrto be given "the point'of '11. Inanvinstrumentaof the'charactendewith two opposedzj aws spaced' apart, aprojectabletgripping piniin the lower-jaw, the" extremity of r such -vgripping 1 pin a being beveled,- "a springinormally h0ldingsuch fscribed comprising a shankandahead-made 5 pin retracted, a lever pivotedon the handle for projectingsaid gripping in," an adj 11st;ablegrippmgpinr in" the upper j awfthe proing -s'hap'edhto the;:s'et-:tobe given the point ectaibletrgripping pinzheing located 'outward 2 ofthe companion gripping-pin, the faceof 1thefllower jaw.iconstituting ananvil and beof theisaw: itOOth, I a spring-controlled striker l Itheis'pa'ce betwe AUeUsTH'BA-s'riitm I: reciprocabl'e in "the heady theextremity of such"striker'being coniormed to the face of saidzanvil:face, and 'an "adjustable gage in en adapted s-il'or posi'tioning' Ethesawitooth on zthe'ianv'il relatively to the" vlength of the 'se'trto begiven the point'of the sawitoothdt one!" of Patents.

